MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU - Manual (Page 117)

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4 AUXILIARY AND APPLIED FUNCTIONS
4.6 All clear function
This function is used to clear the all user data, password setting, backup area and user
data area of FLASH ROM in the Motion CPU module.
(1) Procedure for clear all
(a) Set the Motion CPU module to installation mode (Set a rotary switch 1
(SW1) to "A".)
(b) Select [Execute] button of "Clear CPU Memory" screen displayed by menu
[Online] [Clear CPU Memory]".
POINT
(1) Set the Motion CPU module to installation mode to clear all.
Be sure to set a rotary switch after power supply OFF.
(2) The user data area of FLASH ROM built-in Motion CPU module is also
cleared.
(3) All user data and password setting are cleared at the "Clear all".
It is recommended to be backup them in advance using MT Developer.